发明人高志强,马晓峰,孙丽萍. "Method for the Synthesis of 4-Chloro-5-methoxy-6-nitrobenzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109239258 B, 授权公告日 2020-05-14.
发明人刘建华,张德明,王建平. "A Process for Preparing High-Purity 4-Chloro-5-methoxy-6-nitrobenzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109313571 A, 授权公告日 2019-04-21.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2024, 383, (12), 5156-5177.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2015, 2402, (5), 2090-2116.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chloro-5-methoxy-6-nitrobenzofuran-2-carboxylic acid Using HRMS and NMR". Anal. Chim. Acta, 2015, 2207, (11), 9694-9700.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2018, 1143, (7), 1545-1570.